d/shenango-bsd
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ksched: bug fixes

Browse Source
This commit is contained in:
Adam Belay 2018-07-12 21:50:29 +00:00
parent 0ab4d36cb0
commit ecbbaa66ee
2 changed files with 17 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
ksched/ksched.c
View File

@ -138,7 +138,16 @@ static long ksched_park(void)
put_cpu(); put_cpu();
/* put this task to sleep and reschedule so the next task can run */ /* put this task to sleep and reschedule so the next task can run */
__set_current_state(TASK_UNINTERRUPTIBLE); __set_current_state(TASK_INTERRUPTIBLE);
schedule();
__set_current_state(TASK_RUNNING);
return 0;
}
static long ksched_start(void)
{
/* put this task to sleep and reschedule so the next task can run */
__set_current_state(TASK_INTERRUPTIBLE);
schedule(); schedule();
__set_current_state(TASK_RUNNING); __set_current_state(TASK_RUNNING);
return 0; return 0;
@ -150,6 +159,7 @@ static void ksched_ipi(void *unused)
struct task_struct *t; struct task_struct *t;
unsigned long gen; unsigned long gen;
/* if last_gen is the current gen, ksched_park() beat us here */ /* if last_gen is the current gen, ksched_park() beat us here */
gen = smp_load_acquire(&p->gen); gen = smp_load_acquire(&p->gen);
if (gen == p->last_gen) if (gen == p->last_gen)
@ -227,6 +237,8 @@ ksched_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
switch (cmd) { switch (cmd) {
case KSCHED_IOC_PARK: case KSCHED_IOC_PARK:
return ksched_park(); return ksched_park();
case KSCHED_IOC_START:
return ksched_start();
case KSCHED_IOC_WAKE: case KSCHED_IOC_WAKE:
return ksched_wake((void __user *)arg); return ksched_wake((void __user *)arg);
default: default:
@ -271,7 +283,7 @@ static int __init ksched_init(void)
return ret; return ret;
} }
printk(KERN_INFO "ksched: scheduler interface ready"); printk(KERN_INFO "ksched: API V1 ready");
return 0; return 0;
} }

5
ksched/ksched.h
View File

@ -28,7 +28,8 @@ struct ksched_wake_req {
}; };
#define KSCHED_MAGIC 0xF0 #define KSCHED_MAGIC 0xF0
#define KSCHED_IOC_MAXNR 2 #define KSCHED_IOC_MAXNR 3
#define KSCHED_IOC_PARK _IO(KSCHED_MAGIC, 1) #define KSCHED_IOC_PARK _IO(KSCHED_MAGIC, 1)
#define KSCHED_IOC_WAKE _IOW(KSCHED_MAGIC, 2, struct ksched_wake_req) #define KSCHED_IOC_START _IO(KSCHED_MAGIC, 2)
#define KSCHED_IOC_WAKE _IOW(KSCHED_MAGIC, 3, struct ksched_wake_req)